Pd-catalysed carbonylative annulation of salicylaldehydes with benzyl chlorides using<i>N</i>-formylsaccharin as a CO surrogate
作者:Vinod K. Yadav、Vishnu P. Srivastava、Lal Dhar S. Yadav
DOI:10.1039/c8nj03173h
日期:——
A highly efficient synthesis of 3-arylcoumarins by Pd-catalysed carbonylative cyclisation of salicylaldehydes with benzyl chlorides usingN-formylsaccharin as a CO source is developed.
以 N-甲酰基糖精为 CO 源,通过 Pd 催化水杨醛与苄基氯的羰基化环化,开发了一种高效合成 3-芳基香豆素的方法。
[EN] COUMARIN DERIVATIVE, PHARMACEUTICAL COMPOSITION AND USE THEREOF<br/>[FR] DÉRIVÉ DE COUMARINE, COMPOSITION PHARMACEUTIQUE ET UTILISATION ASSOCIÉES
申请人:BEIJING HANMI PHARMACEUTICAL CO LTD
公开号:WO2012171488A1
公开(公告)日:2012-12-20
The present invention relates to a coumarin derivative of formula (I): wherein X, Y1, Y2, Y3, R1, R2, R3 and R4 are as defined herein, or a pharmaceutically acceptable salt or solvate thereof. The present invention also relates to a pharmaceutical composition comprising the compound of the present invention, and use of the compound of the present invention in treating tumor and/or inflammation.
本发明公开了一种3‑芳基香豆素衍生物 (I) 和 (II) 及其制备方法,属有机化学领域。该方法以取代香豆素衍生物和取代芳基硼酸为原料,在Mn(OAc)3催化下,醋酸为溶剂,合成3‑芳基香豆素衍生物。该合成方法具有原料廉价易得、反应条件温和、产率高、操作方便等特点,有利于工业化生产。该类衍生物在材料、化工、医药等领域具有潜在的应用,本发明为3‑芳基香豆素衍生物的合成提供了一条新的途径。
Base-promoted synthesis of coumarins from salicylaldehydes and aryl-substituted 1,1-dibromo-1-alkenes under transition-metal-free conditions
Facile synthesis of coumarin via the tandem reaction of salicylaldehyde with aryl-substituted 1,1-dibromo-1-alkene was developed. This new protocol proceeds smoothly under mild and transition-metal-free conditions, it allows rapid access to coumarins containing various heteroatoms that are more difficult to prepare by traditional methods. Based on the isolated intermediate of 4-(diethylamino)-3-phenylchroman-2-one and detailed mechanistic studies, a credible tandem pathway was proposed.
A number of fluorescent 3-arylcoumarins (3-aryl-2H-1-benzo-pyran-2-ones) have been synthesized by the photo-coupling of 3-bromocoumarin with aromatic and heteroaromatic compounds. The structure of 3-(1-naphthyl)coumarin was confirmed by X-ray crystallography.